ET 3608 then AA 4989 at O'Hare
Anchorage → Chicago → Lexington
Timetable, Chicago time
07:16ET 3608 from Anchorage at the gate
21:15AA 4989 to Lexington leaves the gate
13 h 59 apart on the timetable
AA 4989 leaves 13 h 59 after ET 3608 arrives on the timetable: more than half a day, so not a connection we count.